Yeah dealers won't typically want to touch the fluids and lubes on the trans and diffs on something that new unless you specifically request it. I've owned too many over the years where the ATF and diff oils looked like crap at the 36Kmi point. Thats about the sweet spot where these gear boxes have shed the most wear materials.

Joel

We change out all the fuilds in the trans and diffys at 30k intervals. If we are in there checking might as well just do em. I can't believe how much dealers charge and don't even do the services